A novel framework for efficient identification of brain cancer region from brain MRI

Diagnosis of brain cancer using existing imaging techniques, e.g., Magnetic Resonance Imaging (MRI) is shrouded with various degrees of challenges. At present, there are very few significant research models focusing on introducing some novel and unique solutions towards such problems of detection. Moreover, existing techniques are found to have lesser accuracy as compared to other detection schemes. Therefore, the proposed paper presents a framework that introduces a series of simple and computationally cost-effective techniques that have assisted in leveraging the accuracy level to a very higher degree. The proposed framework takes the input image and subjects it to non-conventional segmentation mechanism followed by optimizing the performance using directed acyclic graph, Bayesian Network, and neural network. The study outcome of the proposed system shows the significantly higher degree of accuracy in detection performance as compared to frequently existing approaches

Our experience with gastrointestinal stromal tumors over a period of three years from a tertiary care centre

Background: Gastrointestinal stromal tumors (GIST) are the most common mesenchymal neoplasms of the gastrointestinal tract (GIT). Stomach being the commonest site in the GIT, it can occur in the extra-intestinal areas like mesentery, retroperitoneum, omentum and prostate. Exceptionally rare in urinary bladder. Commonly present as solid tumors but cystic degeneration can occur in large tumors especially in extra intestinal regions and may be mistaken for ovarian tumors. We have studied GISTs for a period of 3 years and presenting certain rare entities we encountered. Aim of the study was to study the age and sex prevalence and relative distribution of GISTs in gastrointestinal and extra gastrointestinal (EGIST) areas in various sites, and morphological features in relation to certain rare variants.Methods: 18 surgical resected specimens of gastrointestinal and extra gastrointestinal masses received at the department of pathology, Andhra Medical College, Visakhapatnam, were studied for a period of 3 years from July 2013 to June 2016.Results: GISTs were found to be common in male patients with male to female ratio of 2:1. GISTs of Small bowel showed female predilection. 40% of EGISTs were of larger size and malignant.Conclusions: Age, sex and morphological features were consistent with literature.  Small intestine showed slightly increased prevalence when compared to stomach and large intestine. Tumor size and mitotic count were predictors of outcome. EGISTs showed higher incidence in women and pelvic GISTs have to be carefully evaluated to differentiate them from ovarian tumors

Parametric Comparison of K-means and Adaptive K-means Clustering Performance on Different Images

Image segmentation takes a major role to analyzing the area of interest in image processing. Many researchers have used different types of techniques to analyzing the image. One of the widely used techniques is K-means clustering. In this paper we use two algorithms K-means and the advance of K-means is called as adaptive K-means clustering. Both the algorithms are using in different types of image and got a successful result. By comparing the Time period, PSNR and RMSE value from the result of both algorithms we prove that the Adaptive K-means clustering algorithm gives a best result as compard to K-means clustering in image segmentation.   

Implementation of a three Phase Inverter with a Front End Diode Rectifier Using Average Model

As technology grows every day, the study of power systems has shifted its direction to power electronics to produce the most efficient energy conversion. Power electronics is the study of processing and controlling the flow of electric energy by supplying voltages and currents in a form that is suited for user loads. A power electronic system is any technical system which is an assembly of components such as AC to DC converters (rectifiers) and DC to AC converters (inverters), that are connected together to form a functioning machine or an operational procedure. The paper presents the implementation of a three phase inverter with a front end diode rectifier. The components are modeled separately using the state space average method

PREPARATION AND EVALUATION OF QUETIAPINE FUMARATE MICROEMULSIONS: A NOVEL DELIVERY SYSTEM

Objective: In the present study, the main objective is to improve solubility and bioavailability of Quetiapine fumarate by formulation into micro emulsion. Method: The Quetiapine fumarate micro emulsion was formulated by using mixture of Isopropyl myristate and oleic acid as oil phase, Tween-80 as surfactant, Isopropyl alcohol and Ethanol mixture as co-surfactant by phase titration method. The prepared formulations were evaluated for Limpidity (% transmittance), droplet size, Zeta potential, Electrical conductivity, Rheology, pH, percentage of drug (assay), emulsifying time, in vitro drug diffusion studies and ex vivo permeation studies. Results and conclusion: The Optimized micro emulsion (Micro emulsion 11) formulation containing Quetiapine fumarate (25mg), Surfactant mixture (50%w/w), Oil (12%w/w) and distilled water (38%w/w) has a droplet size of 26.70 nm with a zeta potential of -5.62 millivolts. The micro emulsion was characterized and compared with the pure drug suspension. Microemulsion showed 31.25 fold increased solubility than that of pure drug suspension. In vitro drug release and ex vivo permeation study results were comparable and correlative. The Microemulsion 11 formulation showed 1.4763 times more drug release than that of pure drug suspension. The formulation was found to be stable for three months. Keywords: Microemulsion, Phase titration method, Quetiapine Fumarate,  Emulsifying time

Conservation laws for potential vorticity in a salty ocean or cloudy atmosphere

One of the most important conservation laws in atmospheric and oceanic science is conservation of potential vorticity. The original derivation is approximately a century old, in the work of Rossby and Ertel, and it is related to the celebrated circulation theorems of Kelvin and Bjerknes. However, the laws apply to idealized fluids, and extensions to more realistic scenarios have been problematic. Here, these laws are extended to hold with additional fundamental complexities, including salinity in the ocean, or moisture and clouds in the atmosphere. In the absence of these additional complexities, it is known that potential vorticity is conserved following each fluid parcel; here, for a salty ocean or cloudy atmosphere, the general conserved quantity is potential vorticity integrated over certain pancake-shaped volumes. Furthermore, the conservation laws are also related to a symmetry in the Lagrangian, which brings a connection to the symmetry-conservation relationships seen in other areas of physics.Comment: 11 pages, 3 figure

Clinical presentation of tubal ectopic pregnancy

Background: When the fertilized ovum gets implanted at site other than normal position of uterine cavity, it is known as ectopic pregnancy. Incidence of ectopic pregnancy is 1-2% of all reported pregnancies. It is an unmitigated disaster of human production and the most important cause of morbidity and mortality in first trimester with major cause of reduced child bearing potential. It is notorious in its clinical presentation, challenging the attending physician.Methods: women with risk factors, signs and symptoms and with confirmed diagnosis. Women discharged against medical advice. Study population is 50. Retrospective analysis for 3 years (2016-2019). Objectives of this study were to study the incidence, risk factors, clinical presentation, diagnosis and changing trends of modern management. Results analysed after entering the information in the excel sheets using descriptive analysisResults: Out of 4940 deliveries, 50 were tubal ectopic pregnancies 1.012%. Women aged 20-25 years were 52%. In our study, multiparous were 68%. Common symptoms were abdominal pain 80.2%, amenorrhea 72%, urine gravindex test positive 92.8%. Etiology was PID 20%, previous ectopic pregnancy 4%, IUCD 4%, LSCS with tubectomy 16%, most common site is ampulla 82%. About 78% were ruptured. Tubal abortions 4%, salpingectomy done in 82%. Laparotomy in 2.43% in hemodynamically unstable. Medical management 8%. Salpingostomy in 4% and expectant management 2%. Morbidity in the form of blood transfusion 23.48%, DIC with ICU admission 2%. No mortality.Conclusions: A high index of clinical suspicion with underlying risk factors may get us early diagnosis for timely intervention

Structural and Optical Properties of Electro Sprayed Tin Oxide Thin Films

Semiconducting transparent SnO2 thin films were prepared by microcontroller processed electro spraying technique. The structural and optical properties of the films were studied using X-ray diffractometer, UV-Vis spectrophotometer and Photoluminescence spectroscopy respectively. The polycrystalline nature of the films with tetragonal structure was observed from XRD pattern with the mean grain size of 17 nm. The Optical band gap of the films was calculated from the absorption curve and the interference pattern was observed on transmittance spectra. The calculated band gap of 3.5 eV is larger than the bulk band gap of Tin oxide. The blue emission band at 388 nm was observed from room temperature photoluminescence analysis and the effect of excitation wavelength of the films were studied and discussed. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3598